Twin Channel
Twin-channel transfer equipment that splits and steers finished bar from the mill delivery into the cooling bed at full rolling speed.
Discuss Your RequirementSpecified around the line—not selected from a generic list.
On a high-speed bar mill the finished bar leaves the last stand faster than a single path can absorb. A twin channel diverts alternate bars between two channels so the cooling bed fills evenly and the mill keeps rolling. Channel profile, switch timing, pinch-roll setting and the transition into the braking slide all have to match the section range and delivery speed.
Engineering scope
- Twin-channel bodies, liners and transition pieces
- Switch and diverter arrangements with actuation
- Pinch roll and delivery pipe interfaces
- Channel profiles matched to the finished section range
- Wear liners and replacement channel sections
- Integration with braking slides and cooling bed entry
Typical applications
- 01High-speed TMT and rebar mills
- 02Multi-strand bar delivery ends
- 03Cooling bed entry sections
- 04Capacity upgrades on existing delivery ends
Why high-speed bar mills use a twin channel
At high finishing speeds a bar has to be slowed down and released onto the cooling bed before the next bar arrives. With a single channel, the following bar can reach the entry before the previous one has cleared, which caps the rolling speed on small sections.
A twin channel solves this with two channels side by side and a diverter at the entry. Alternate bars are switched into alternate channels, so each channel has the time of two bars to brake and release its own. The mill can then roll faster without overloading the cooling bed entry.
Design points for a twin channel
The channel profile and its liners have to guide both the smallest and the largest finished section without catching the front end. The diverter switch has to move fast and repeatably, timed to the gap between bars. The release mechanism that opens the channel and drops the bar onto the bed, and how it is actuated, must suit the air or hydraulic supply available.
The whole assembly has to sit exactly on the pass line height between the pinch roll and the cooling bed, with wear liners that can be changed during a short stop.
Converting an existing cooling bed entry
Many mills move from a single channel to a twin channel to raise rolling speed on small sections. The assessment covers the distance from the last stand and pinch roll to the bed, the existing braking slide, the space beside the bed for the second channel and the control signals available for bar tracking.
What to send us for a quotation
The more of this you can share, the faster we can come back with a firm scope.
- Finished section range and delivery speed
- Bar length after the dividing shear
- Layout from the last stand and pinch roll to the cooling bed
- Existing channel and braking arrangement
- Available air or hydraulic supply
- Existing mill control and bar tracking system
Questions buyers ask early
What does a twin channel do in a bar mill?
It splits the flow of finished bar leaving the mill into two paths so alternate bars are steered to different positions on the cooling bed. That lets the bed accept bar at the full rolling rate instead of limiting it.
Which data is needed to specify a twin channel?
Finished section range, delivery speed, bar length, the distance from the last stand to the cooling bed and the existing braking slide arrangement are the starting points.
Does a twin channel need changes to the control system?
Usually, yes. The diverter has to switch between bars at the right moment, so its timing comes from bar tracking—typically hot metal detectors and signals from the dividing shear. The existing mill automation may need to be extended to carry these signals.
Share it and we will come back on feasibility, scope and the data still needed.
Discuss your twin channel requirement.
Share the application, product range, current equipment and performance objective. The conversation starts with your process—not a standard catalogue answer.